no code implementations • 17 Oct 2024 • Abhijith Jayakumar, Andrey Y. Lokhov, Sidhant Misra, Marc Vuffray
This property allows us to learn the true model using a conditional likelihood based estimator, even when the samples come from a metastable distribution concentrated in a small region of the state space.
no code implementations • 30 Sep 2023 • Melvyn Tyloo, Marc Vuffray, Andrey Y. Lokhov
Malfunctioning equipment, erroneous operating conditions or periodic load variations can cause periodic disturbances that would persist over time, creating an undesirable transfer of energy across the system -- an effect referred to as forced oscillations.
1 code implementation • 8 Apr 2023 • Abhijith Jayakumar, Marc Vuffray, Andrey Y. Lokhov
An ideal representation of a quantum state combines a succinct characterization informed by the system's structure and symmetries, along with the ability to predict the physical observables of interest.
no code implementations • 3 Sep 2021 • Jon Nelson, Marc Vuffray, Andrey Y. Lokhov, Tameem Albash, Carleton Coffrin
This work builds on those insights and identifies a class of small hardware-native Ising models that are robust to noise effects and proposes a procedure for executing these models on QA hardware to maximize Gibbs sampling performance.
Combinatorial Optimization
Vocal Bursts Intensity Prediction
1 code implementation • 7 Apr 2021 • Jon Nelson, Marc Vuffray, Andrey Y. Lokhov, Carleton Coffrin
Overall, the proposed QASA protocol provides a useful tool for assessing the performance of current and emerging quantum annealing devices.
1 code implementation • 2 Apr 2021 • Arkopal Dutt, Andrey Y. Lokhov, Marc Vuffray, Sidhant Misra
We observe that for samples coming from a dynamical process far from equilibrium, the sample complexity reduces exponentially compared to a dynamical process that mixes quickly.
1 code implementation • 18 Feb 2021 • Christopher X. Ren, Sidhant Misra, Marc Vuffray, Andrey Y. Lokhov
We address the problem of learning of continuous exponential family distributions with unbounded support.
no code implementations • 16 Dec 2020 • Marc Vuffray, Carleton Coffrin, Yaroslav A. Kharkov, Andrey Y. Lokhov
Drawing independent samples from high-dimensional probability distributions represents the major computational bottleneck for modern algorithms, including powerful machine learning frameworks such as deep learning.
1 code implementation • NeurIPS 2020 • Abhijith J., Andrey Y. Lokhov, Sidhant Misra, Marc Vuffray
In addition, we also show a variant of NeurISE that can be used to learn a neural net representation for the full energy function of the true model.
no code implementations • 14 Nov 2019 • Christopher Hannon, Deepjyoti Deka, Dong Jin, Marc Vuffray, Andrey Y. Lokhov
Ensuring secure and reliable operations of the power grid is a primary concern of system operators.
1 code implementation • NeurIPS 2020 • Marc Vuffray, Sidhant Misra, Andrey Y. Lokhov
We identify a single condition related to model parametrization that leads to rigorous guarantees on the recovery of model structure and parameters in any error norm, and is readily verifiable for a large class of models.
5 code implementations • arXiv 2018 • Patrick J. Coles, Stephan Eidenbenz, Scott Pakin, Adetokunbo Adedoyin, John Ambrosiano, Petr Anisimov, William Casper, Gopinath Chennupati, Carleton Coffrin, Hristo Djidjev, David Gunter, Satish Karra, Nathan Lemons, Shizeng Lin, Andrey Lokhov, Alexander Malyzhenkov, David Mascarenas, Susan Mniszewski, Balu Nadiga, Dan O'Malley, Diane Oyen, Lakshman Prasad, Randy Roberts, Phil Romero, Nandakishore Santhi, Nikolai Sinitsyn, Pieter Swart, Marc Vuffray, Jim Wendelberger, Boram Yoon, Richard Zamora, Wei Zhu
As quantum computers become available to the general public, the need has arisen to train a cohort of quantum programmers, many of whom have been developing classical computer programs for most of their careers.
Emerging Technologies Quantum Physics
no code implementations • 27 Oct 2017 • Andrey Y. Lokhov, Marc Vuffray, Dmitry Shemetov, Deepjyoti Deka, Michael Chertkov
We consider the problem of reconstructing the dynamic state matrix of transmission power grids from time-stamped PMU measurements in the regime of ambient fluctuations.
no code implementations • 15 Mar 2017 • Sidhant Misra, Marc Vuffray, Andrey Y. Lokhov
What is the optimal number of independent observations from which a sparse Gaussian Graphical Model can be correctly recovered?
1 code implementation • 15 Dec 2016 • Andrey Y. Lokhov, Marc Vuffray, Sidhant Misra, Michael Chertkov
Reconstruction of structure and parameters of an Ising model from binary samples is a problem of practical importance in a variety of disciplines, ranging from statistical physics and computational biology to image processing and machine learning.
no code implementations • 21 Jun 2016 • Krishnamurthy Dvijotham, Pascal Van Hentenryck, Michael Chertkov, Sidhant Misra, Marc Vuffray
In this paper, we formulate the optimal power flow problem over tree networks as an inference problem over a tree-structured graphical model where the nodal variables are low-dimensional vectors.
no code implementations • NeurIPS 2016 • Marc Vuffray, Sidhant Misra, Andrey Y. Lokhov, Michael Chertkov
We prove that with appropriate regularization, the estimator recovers the underlying graph using a number of samples that is logarithmic in the system size p and exponential in the maximum coupling-intensity and maximum node-degree.